Adding An On-Board Trailer Battery to Trailer for Electric Power Tongue Jack
Published 12/06/2022
Products Featured in This Question
Question:
So I received the jack and there is no indication of the amp draw. It has an internal breaker so I don’t know the size of that. Polestar doesn’t have a real website so I can’t contact them at all. The only information that I have is that the wiring from the jack is #14 gauge. So I am thinking of using a 100AH LiFePo4 battery. Thoughts? I want to connect it using #12 wire ~5’ to the #14 wiring from the jack factory wires are too short. I want to install. 12V Charger and connect that the the truck wiring so that when it is plugged into the truck and running it will charge the battery. Can you provide a 12V charger for this? Any other items that I am missing?
asked by: Steve H
Expert Reply:
A 100 amp hour battery would suffice for powering a trailer tongue jack as well as some other accessories. For this, we have both AGM such as the Bright Way Deep Cycle RV or Marine Battery part # BRW94FR. In order to charge these batteries, you'd need to tap into the trailer connector's battery charge line circuit. This is only present on seven way connections so if you don't yet have one you'll need to upgrade using the Trailer Wiring 7-Way Upgrade Kit part # HS381-9000 which is for the trailer side. I do recommend using an on-board battery as it allows for much more than just powering a tongue jack but we do have options that allow you to utilize the vehicle power directly with the Electric Trailer Jack part # EJ-3527-BBX.
Please note, if you don't already have a seven way connection on the vehicle you'll need to add one to utilize the charge line circuit which is a wire run from the vehcile battery to the trailer battery through the trailer connector. I recommend the Trailer Connector Upgrade Kit part # ETBC7 for this.
Product Page this Question was Asked From
Bright Way Deep Cycle RV or Marine Battery - AGM - 12V - 100 Ah - Group 27
- Battery
- Marine
- RV
- 12V
- Group 27
- 100 Ah
- AGM
- Bright Way
more information >
Continue Researching
- Article: How to Install an Electric Trailer Jack
- Shop: etrailer Electric Trailer Jack - Drop Leg - A-Frame - 18" Lift - 3,500 lbs
- Q&A: Looking For Electric Jack That Can Be Rotated 90 Degrees
- Shop: PowerMax 30A RV Power Center and Distribution Panel - 45A DC Converter
- Shop: Progressive Dynamics 4000 Series RV Converter w/ Charge Wizard and AC/DC Distribution Panel - 60 Amp
- Shop: etrailer Electric Trailer Jack w/ 7-Way - Drop Leg - A-Frame - 18" Lift - 5,000 lbs
- Shop: etrailer Electric Trailer Jack - Drop Leg - A-Frame - 18" Lift - 5,000 lbs
- Q&A: Can The Head On The etrailer Electric Trailer Jack e79GV Be Rotated For Tailgate Clearance?
- Shop: Power Mountain Tallboy Off-Road Bottle Jack - 8-1/2" to 37-3/4" Lift - 6 Tons
- Q&A: What Gauge Wire Should be Ran to Trailer Powered Jack Motor
- Q&A: Can Just the Head of an Electric A-Frame Trailer Jack be Rotated 90 Degrees
- Q&A: How Many Amps does the Motor Draw for the Electric A-Frame Tongue Jack, # LC285318
- Shop: Transfer Switch w/ Quick Flip Connectors - 30A - 120V AC
- Q&A: How To Install a Battery On a Trailer for Use with Electric Jack
- Q&A: What Gauge Wire Is Needed To Run Charge Line for Battery From Truck to Trailer
- Article: Trailer Wiring Diagrams
- Shop: Trailer Hitch
- Search Results: trailer hitch
- Video: Firestone Ride-Rite Air Bags with Easy Mount Compressor Feature Breakdown
- Search Results: trailer jack
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Shop: Trailer Wiring
- Article: How to Measure for Trailer Hitch Drop
- Shop: Suspension Enhancement
- Search Results: trailer tires and wheels
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Search Results: trailer wiring
- Shop: Brake Controller
- Video: B&W Companion OEM 5th Wheel Hitch Manufacturer Breakdown
- Article: How to Measure Your Trailer Wheel Bolt Pattern
on Battery
